JSON, XML & JWT Tools

JSON & XML comparison, formatting, path querying, and JWT decoding — all in one extension.

Short Description Offline JSON & XML compare, format, and path query + JWT decoder. No data leaves your browser. Zero permissions, zero tracking. Detailed Description A powerful, privacy-first developer toolkit for JSON, XML, and JWT — running entirely in your browser with zero external connections. ━━━ JSON TOOLS ━━━ ◆ Compare — Paste two JSONs and instantly see a color-coded, side-by-side diff. Green for additions, red for deletions, yellow for modifications. Toggle "Ignore array order" for flexible comparison using smart similarity matching. ◆ Format & Minify — Pretty-print JSON with your choice of indentation (2 spaces, 4 spaces, or tabs), or compress it to a single line. Live syntax highlighting as you type. ◆ JSONPath Query — Query your JSON with expressions like $.store.books[*].title. Click any line in the input to auto-populate the path — no need to type it manually. ━━━ XML TOOLS ━━━ ◆ Compare — Deep structural comparison of two XML documents with colored side-by-side diff. Compares elements, attributes, and text content. Supports "Ignore element order" mode. ◆ Format & Minify — Pretty-print messy XML or compress it. Preserves XML declarations (<?xml?>). Live syntax highlighting with color-coded tags, attributes, and values. ◆ XPath Query — Run XPath expressions against your XML. Click any element or attribute to auto-populate the path. Works seamlessly with namespaced XML documents — namespace handling is fully automatic. ━━━ JWT DECODER ━━━ ◆ Paste any JWT token to instantly decode the header, payload, and signature. Timestamp claims (exp, iat, nbf) are displayed as human-readable dates, with a clear indicator showing whether the token is expired or still valid. Copy individual sections or everything at once. PRIVACY GUARANTEE ✔ 100% offline — all processing happens locally in your browser ✔ Zero permissions requested — no access to your tabs, browsing history, or any website ✔ Zero network calls — no fetch, no analytics, no telemetry, no tracking ✔ Zero external dependencies — pure vanilla JavaScript using built-in browser APIs ✔ Open source — inspect every line of code yourself Built for developers who care about privacy. Your data stays on your machine. Period.